Method of making battery-plates.



G. J. MILLER. A y METHOD 0F MAKING BATTERY PLATES.

APPLICATION FILED AUG.27, 1906;

Patented June`29, 1909.

UNITED STi/-XTES PATE NT OIFICE.

esoneri .1'. incitan, or Tombo, omo.

LIE THOD QF MAKING BATTERY-PLATES.

p Application filed August 27, 1906,iSeria1No- 332,129.

To all whom 'it may concern.'

Be it' known that I, Geenen J. Minuit, of Toledo, count ot' Lucas, and State of Ohio, have invented certain new and useful Imrovements in Methods of )ifa-king Battery l' my improved method, the battery lates; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to. which it appertains to make and use the same, reference being had to the'accompanying drawings, and to the characters of reference marked thereon, which form part of this specification.

This invention has reference to an improved method of making plates for use in electric batteries; and it has for its object to rovide an improved method in' the manuacture of battery electrodes by which the active material `shall be made to firmly adhere to the electrode and when once in )osition shall be positively held against dispiacement.

The invention has particular reference to an improvement in the methods of making electrodes for storage batteries in which each face of the lead plate forming the grid is provided with a- )lurality of transverse ribs adapted to hol the active material between the faces thereof.

The method by which I have heretofore constructed battery plates is fully set forth in Letters Patent issued to me .lune 51th, 1901, No. 676,334. In practicingthe method set forth in said patent, the ribs ol' the plate are substantially nrpendirular to the central body or core, tlie side lfares ot' the ribs being slightly inclined to permit the plates to be withdrawn from thc dies be tween which they arc loi-med. l find in thus forming a plate on op iosite faces 'wit h ribs having slightly inclined side faces, that the active material in the form oll a plastic mass after being forced between the ribs is liable to become dislodged, the dislodgment occurring to a greater extent at the ends advjacent to the side margins of the plate, the

efficiency of the battery being as a eonsequence impaired.

In the practice of my ,improved method the active material, after being lodgi-nl between the ribs is positively held in place, be-

i i Specification oi ijettr Patent.

i l i i l i I l l i l Patenteaeiuie 29, i909.

ingcpractically insured against dislodgment from `either,chemical oi"'n`icch.mical action.-

In the accompanying drawings Figure l is a view illustrating a means for carrying out plate being shown in longitudinal'sections; lfig. 2 is a view to further illustrate my method, the plate being in transverse section; Fig. 3 is a face view of the upper portion only of a battery plate constructed according to my in iproved method, the saine being shown in readiness to receive the active material. Fig. 'tis an enlarged section showing the original and altered position of the ribs of the plate before and after being operated upon.

fl'tefeiring to the (.lrawings, l indicatesa lead plate provided with ribs 2 disposed in planes transverse to the body. lIn performing my improved method I take a battery plate l after it has been formed by suitable die faces with ribs 2, and by employing a siut able tool 3, either manually or mechanically operated and having a blunt scoring lace 4,

I draw the same at an inclination in an up- Ward direction across the ridges 5 ot' the ribs 2, as indicated by the arrow Fig` 1. This operation may be repeated at suitable distances across the face of the plate, or the several scoring operations may be performed simultaneously by employing a pluralityol tools arranged side by side and operating in unison,

By drawing thc-tool over the face of the' plate in contaetwith the ridges of the ribs the latin' are deflected from their original position .t Fig. 4, to the position a indicated bv dotted lines, so that after being thus dellirted the active material will bcjirinly held in place. ai'ter being lodged in the space between lhc ribs.

ly means olfiny improved method ani enabled to produce a battery plate which is ine.\'pe.nsi\'e to niinnllaeture and which eX- treniely durable, being capable of sustaining `rough mechanical usage without danger ol making battery plates' provided with trans- In testimony, that I claim the foregoing as i verse ribs, which consists in scorin the plate my own I aiix my signature, in lpresence of v10 aorossrtlhe ribs transversely tg sai rlilbs(i A f two Witnesses. Y 2. efimprovement in t e met o s o 5 making battery plates provided with trans- GEO' J' MILLER verse ribs, which consists in scoring the plate Witnesses:

at short distances apart to deflect the ridges CARL H; KELLER, of said ribs. ALICE M. DRURY. 

